16beta-lower alkylthio-1, 4-dihydro-3, 17beta-estradiol 3-lower alkyl ether and production thereof



I V :Norio Tokutake, Hyogo Prefecture, Japan, assignor to possesses a variety of physiological activities such as antii to" the followingjscheme'.

United States P n 1 53122224..

aisasse I r v w H rap-Leann ALKYLT KU-IA-DEHYDRO 3,17

ESTRADIOL saowsn ALKYL n'rnsn AND SR PRUDUCTHQN "rrmnson Shionogi dz 00., Ltd., Osaka, Japan No Drawing. Filed Mar. 1, 1963, Ser. No. 262,2lii

Claims priority, application Japan .Mar. 10, 1962 R0 2 Claims. (Cl. 260-3975) wherein R and R each has the same significance as designated above. .The reduction may be carried out by treating the starting compound (II) with an alkali metal (e.g. lithium, sodium, potassium) in the presence of a lower alkanol (e.g. methanol, ethanol) in liquid ammonia at a low temperature, usually while cooling with acetone- Dry Ice.

The thus-obtained 1618-loweralkylthio-1,4-dihydro-3, 17,8-estradiol 3-1ower alkyl ether (I) possesses a variety OH 1 l I W v of physiological activities as stated above. Its remark- 1 able pituitary gonadotrophin inhibiting activity may be Thepresent invention relates to 16fi-lower alkylthio- 1,4-dihydro-3,17B-estradiol' 3-lower alkyl ether and production thereof.

The said 16,8-lower alkylthio1,4-dihydro-3,l7B-estradiol 3-lower alkyl ether is represented by the formula: 15

especially noted. For instance, the compound produced marked inhibition of gonadotrophin secretion at the dosage up to 10 mg. and showed increase of uterine (I) Weight, when subcutaneously or orally administered to mice.

The following examples set forth illustratively presently-preferred embodiments of the present invention.

wherein R and R each represents a lower alkyl group (e.g. methyl, ethyl, propyl, butyl). This compound (I) diuretic activity, electrolytes retaining activity, uterotropic Example 1 activity, antiprogestational activity and pituitary gonadotrophin inhibiting activity. 7 Accordingly, it is useful as an I artificial hormonic substance.

The l6p3-lower alkylthio-l,4-dihydro-3,17fl-estradiol 3-lower alkyl etherfl) is prepared by subjecting 16,8-lower jaw,

alkylthio-3,17,B.-estradiol 3-lower alkyl ether to reduction. 5 The starting material, l6fl-lower alkylthio-3,l7fii-estradiol 3-lower alkyl ether, is represented by the formula: 013,0 01130 ether (700 mg.) in anhydrous ether (160 ml.) is dropwise acetone-Dry Ice. After addition of metallic lithium (2 g), the resultant dark blue mixture is stirred for 25 minutes and anhydrous ethanol is dropwise added thereto until the colour disappears. After evaporation of Nit and water in order, dried and evaporated. The colorless on et 3 and petroleum ether to give 16B-ethylthio-1,4-dil1ydro- 3,17,8-estradiol 3-methyl ether (434 mg.) as White colorless needles melting at 130.5 to 131. C1. [a] +46.9 (CHCl 55 v32; 3530,1696, 1670 cm,

I. Am. Cheni.;Soc., vol. '79, p. 2005 (1957)], according Treat'ment with S, 9.18. Found: C, 7230,1-1, 9.40; S, 8.76.

potassium lower alkylmercaptide 6O 7 in acetone.

Example 2 Reduction with C1130- CHM-V lithium aluminum hydnde n A solution of 16fl ethylthio-3,l7fi-estradiol 3-methyl ether (400 mg.) in anhydrous ether (92 ml.) and A solution of l6B-ethylthio-3,l7fl-estradiol S-methyl added to liquid ammonia (280 ml.) While cooling with H) ammonia, the reaction mixture is shaken with ether. 1 l The ether extract is shaken with 5% potassium hydroxide wherein R and R each has the same significance as designaked above and canwjbevprepared from a known Steroid, viscous residue is crystallized from a mixture of acetone l-Gd-bromo-estrone 3-lower alkyl ether [Johns Analysis-Calm. for C H O S: C, 72.36; H, 9.25;

' V on V p, 1 VT anhydrous ethanol (014 m1.) is dropwise added Within cg $9 5 minutes to a solution of metallic lithium (0.64 g.) in liquid; ammonia: (89-11111) while cooling with acetone- Dry Ice. After stirring the resultant dark blue mixture for 5 minutes, anhydrous ethanol is dropwise added 4 What is claimed'is: 1. lfifi-lower alkylthio 1,4 dihydro 3,17fl estradiol 3-loWer alkyl ether.

2. l6fi-ethylthio-1,4-dihydro-3,17(3 estradiol 3 methyl thereto until the colour disappears. After evaporation 5 ether References Cited in the file of this patent Magerlein et al.: Journal of Amer. Chem. Soc., vol. 80 (1958.), pages2296-2297i Fieser et al.: Steroids (1959'), published by Reinhold Publishing:orp., New York, pagesSSS-Q 

1. 16B-LOWER ALKYTHIO - 1,4 - DIHYDRO - 3,17B - ESTRADIOL 3-LOWER ALKYL ETHER. 